Machine for cutting wooden dishes



(No Model.) 1 4 Sheets-Sheet 1. D. H. BRENNER. MACHINE FOR CUTTINGWOODEN DISHES.

Patented Aug. 27, 1889, 1, 15.1.

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(No Model.) 4 Sheets-Sheet 2.

D. H. BRENNER.

MACHINE FOR CUTTING WOODEN DISHES.

No. 409,909. Patented Aug. 2'7, 1889. 11 .2.

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4 Sheets-Sheet 3.

(No Model.)

D. H. BRENNER. I MACHINE FOR GUTTING WOODEN DISHES. No. 409.909.

Patented Aug; 27,1889.

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(No Model.) 4 Sheets-Sheet 4.

D. H. BRENNER.

MACHINE FOR CUTTING WOODEN DISHES. No 409,909; Patented Aug. 27, 1889.

' N PETCRS. Phelo-Lilhographen Washington. D c

UNITED STATES PATENT OFFICE.

DAVID l-I. BRENNER, OF GRAND RAPIDS, MICHIGAN.

MACHINE FOR CUTTING WOODEN DISHES.

SPECIFICATION forming part of Letters Patent No. 409,909, dated August2'7, 1889.

Application filed April 25, 1889. Serial No. 308,515. (No model.)

To all whom it may concern:

Be it known that 1, DAVID II. BRENNER, a citizen of the United States,residing at the city of Grand Rapids, in the county of Kent and State ofMichigan, have invented a certain new and useful Machine for CuttinglVooden Dishes, of which the following is a specification.

This invention has for its object to provide novel mechanism for cuttingdishes from wood blocks; and it consists in the combination of deviceshereinafter described and claimed, reference being made to theaccompanying drawings, in which Figure 1 is a front elevation of adish-cutting machine embodying my invention; Fig. 2, a front elevationof a part of the machine, to more clearly show the devices forreciproeating the facing-knife; Fig. 3, a top plan view of the same;Fig. 4, a detail sectional view on the line a: m, Fig. 1; Fig. 5, adetail sectional view on the line 3 y, Fig. 1; Fig. 6, a detailsectional view on the line .2 5, Fig. 1; Fig. 7, a detail front View ofthe feed devices; Fig. 7 a vertical sectional view of the same; Fig. 8,a plan view of the cutter; Fig. 9, a transverse sectional view of thesame.

In order to enable those skilled in the art to make and usen'1yinvention,I will nowdescribe the same in detail, referring to thedrawings, where the letter A indicates the base-frame supporting thetable A and rotating shaft- B, the latter being placed, as here shown,in a vertical position in the bearing W,to allow the dishes severed fromthe block to drop by their gravity through the opening in the shaft, ashereinafter explained.

I have shown the shaft in two sections, the lower one being designatedby B and the upper one by B, and the section 13 is hollow, with theopening of sufficient size to allow the dishes severed from the block bythe knife E to drop by gravity down through the shaft. The section B, Iprefer to extend upwardly, where it is provided with a pulley O, orother suitable mechanism for giving it a revolving motion.

Instead of giving the shaft B and knife E a revolving motion, it mayhave a reciprocal rotary motion imparted to it by any suitablemechanism. I deem it unnecessary to show and describe such mechanism, asthere are various methods of giving reciprocal rotary motion to a shaft,which are well known.

The section B,I prefer to make hollow for the purpose of receiving ablast of air if it should be found necessary in order to drive thedishes out of the shaft with sufficient rapidity. The knife E ispreferably attached to the enlarged or curved portion of the shaft byscrews at each end, as shown in Fig. 8; but other attaching devices maybe employed. The means of attachment is immaterial, inasmuch as the dishout from the block passes inwardly and drops down through the hollowshaft.

If found desirable, the knife E may be made integral with the hollowshaft by merely tempering the shaft at one side of the slot E, throughwhich the dishes pass into the shaft as they are severed from the block.A caniwheel D is rigidly attached to the shaft, and a facing-knife F isadapted to be moved by the cam across the face of the wood block aftereach dish is severed therefrom. In the present example of my inventionthe facingknife is operated by a knife-bar G, secured to the knife andconnected with one end of a lever H, pivoted intermediate its ends, asat H, and connected to a cam-arm I, having a pin, roller, or wheel J,working in the camgroove K of the cam-wheel D. The cam-arm I isfurnished at its lower end with teeth or pins to form a rack-bar L,which engages a pinion M, to intermittently rotate the feedscrew 0. Oneway of effecting this is to mount the pinion M looselyon the end of thefeed screw and connect the two, as by a ratchet-wheel and pawl N, insuch manner that when the rack-bar moves in onedirection the pinion Mwill rotate without turning the feed-screw by reason of the pawl slidingover the teeth of the ratchet-wheel, while in the movement of therack-bar in the opposite direction the pawl will engage the ratchetwheel and rotate the feed-screw. This type of clutch device, comprisingthe pinion, ratchet-wheel, and pawl, is a well-known contrivance whereintermittent rotation of a shaft is desired, and therefore requires nofurther description or illustration. The feedscrew passes between thetwo parts of a divided or split nut Q, to which is connected a doggingblock and clamp P of any ordinary construction for engaging and movingthe Wood block from which the dishes are to be severed. The nut Q isadapted to be opened and closed at will to stop and start the feedscrew,and this may be effected by providing the sections of the nut with pins3 3,working, respectively, in the curved slots 1 and 2 of a disk B. Byturning the disk in one direction t e pins are moved apart or away fromeach other, thereby separating the two parts of the nut, so as todisengage them from the feedscrew, while by turning the disk in theopposite direction the pins are carried toward each other, and thusengage the nut with the feed-screw. A lever S is rigidly attached to apart of the slotted disk R, and is provided with a pin 5, that moves ina curved slot of a pivoted lever T. By moving the arm Sdownward the nutQ is opened, as above described, to release the engagement of the nutwith the feed screw. A spring U, pressing on the slotted arm T, isdesigned to hold the pin 5 in a notch 6 of the lever until said pin isforced out and the handle S swung down for the purpose of disengagingthe nut from the screw. A coiled spring V serves to move the lever Sdownward, and thereby separate the nut Q and release it from engagementwith the feed-screw.

In the drawings I have shown a quadruple machinethat is, a machinehaving a revolving cutter adapted to operate upon four blocks of wood onthe table; but it is evident that my machine maybe applied to a singleblock or any other number which may be found desirable. I believe thatby means of a blast which will drive the severed dishes out of thehollow shaft B four or more blocks may be operated on. The rotatingknife or cutter and the facing-knife being operated from the samedrive-shaft insures the exact movement of the two knives and enables meto run the machine with great speed, only limited by the difficulty ofdisposing of the dishes after they are severed from the block. Thedogging-block and clamp P do not differ from clamp devices now in use,and therefore need no further description.

In case my machine is used in a horizontal position it would benecessary to apply a blast through the shaft in order to remove thedishes cut from the block; but when used as an upright machine, which isthe way I design to use it, the dishes will drop from the machine asfast as they are severed from the block unless the machine were runningat great speed and operating upon more than one block at a time.

Having thus described my invention, what I claim to have invented, anddesire to secure by Letters Patent, is-

1. A machine for cutting concavo-convex dishes, comprising in itsconstruction a rotating drive-shaft having a cam, and a curved knife anda reciprocating facing-knife connected to and operated by the cam on therotating drive-shaft, the knives so arranged with reference to eachother that the reciprocating facing-knife faces the block after each cutby the curved knife, substantially as described.

2. In a machine for cutting wooden dishes continuously from a block ofwood, the combination of a rotating knife, a hollow shaft upon which theknife is mounted, said shaft adapted to receive the severed dishes, anda facing-knife adapted to face the block after each cut of the rotatingknife.

In a machine for cutting wooden dishes continuously from a block ofwood, a revolving knife mounted on a hollow shaft provided with anopening for the reception of the dish as it is severed from the block,and an aperture extending the length of the shaft and adapted to receivea blast of air at one end for driving or forcing out at the other end ofsaid shaft the severed dishes, substantially as described.

t. In a machine for cutting wooden dishes, the combination of afeed-screw, a slotted disk adapted to turn in opposite directions, asplit nut adapted to engage with the threads of the feed-screw andprovided with two pins, each engaging with a slot in the disk, a leverattached to the disk andprovided with a pin or catch, a slotted arm orlever, a spring adapted to hold the arm or lever in position to lock thesplit nut in engagement with the feed screw, and a coiled spring adaptedthrough the lever to sever such engagement when the catch or pin isrelieved from its locking position, substantially as described.

5. The combination of a rotating shaft and its knife, a facing-knife, asliding knife-bar attached at one end to the facing-knife, a leverattached at one end to the knife-bar and at the other end provided witha pin or roller, and a cam-wheel rigidly attached to the shaft thatrotates the knife and engaging said pin or roller, substantially asdescribed.

6. The combination of a main drive-shaft, a cutter moved by the shaft, agrooved cam- Wheel on the shaft, an arm having a device moving in thegroove in the cam-wheel and terminating at the other end in a rack-bar,a pinion with which the rack-bar engages, and a ratchet operated by saidpinion and engaging with the feedscrew and giving it an intermittentmovement, substantially as described.

In witness whereof I have hereunto set my hand and seal in the presenceof two Witnesses.

DAVID I-I. BRENNER. [L. s.]

\Vitnesses:

HUGH E. NVILsON, HARRY P. VAN WAGNER.

